Introduce ThreadedInputConnection behind a switch

chrome/app/chrome_main_delegate.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/app/chrome_main_delegate.h"
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/cpu.h"
 #include "base/files/file_path.h"
@@ skipping 315 matching lines @@
 };
 
 // Initializes the user data dir. Must be called before InitializeLocalState().
 void InitializeUserDataDir() {
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   base::FilePath user_data_dir =
       command_line->GetSwitchValuePath(switches::kUserDataDir);
   std::string process_type =
       command_line->GetSwitchValueASCII(switches::kProcessType);
 
+#if defined(OS_ANDROID)
+  // XXX: do not ship with this.
+  command_line->AppendSwitch("use-ime-thread");
+#endif
+
 #if defined(OS_LINUX)
   // On Linux, Chrome does not support running multiple copies under different
   // DISPLAYs, so the profile directory can be specified in the environment to
   // support the virtual desktop use-case.
   if (user_data_dir.empty()) {
     std::string user_data_dir_string;
     scoped_ptr<base::Environment> environment(base::Environment::Create());
     if (environment->GetVar("CHROME_USER_DATA_DIR", &user_data_dir_string) &&
         base::IsStringUTF8(user_data_dir_string)) {
       user_data_dir = base::FilePath::FromUTF8Unsafe(user_data_dir_string);
@@ skipping 599 matching lines @@
     case version_info::Channel::CANARY:
       return true;
     case version_info::Channel::DEV:
     case version_info::Channel::BETA:
     case version_info::Channel::STABLE:
     default:
       // Don't enable instrumentation.
       return false;
   }
 }